body {
  --page-bg: var(--paper);
  background-color: var(--paper);
  color: var(--ink);
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 4rem 1rem 4rem;
  font-family: 'Cormorant Garamond', Georgia, serif;
  font-weight: 300;
  transition: background-color 0.6s ease;
}
body.nav-active {
  --page-bg: var(--paper-deep);
  background-color: var(--paper-deep);
}

/* ── Form container ─────────────────────────────────────────── */
.form-container {
  width: min(92vw, 480px);
  margin-top: 1rem;
  animation: fadeUp 0.6s ease both;
}

/* ── Page heading ───────────────────────────────────────────── */
h1 {
  font-size: 2rem;
  font-weight: 300;
  letter-spacing: 0.08em;
  color: var(--ink);
  margin-bottom: 2.4rem;
  text-align: center;
}

.field-summary {
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  padding: 0.9rem 0;
  margin-bottom: 2rem;
  color: var(--ink-mute);
  font-size: 0.82rem;
  line-height: 1.55;
  letter-spacing: 0.02em;
}

.field-summary p {
  margin: 0.2rem 0;
}

/* ── Section divider ──────────────────────────────────────────── */
.section-label {
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: 1.4rem;
  margin-top: 2.4rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--rule);
}

/* ── Form field wrapper ─────────────────────────────────────── */
.field {
  margin-bottom: 1.8rem;
}
.field-row {
  display: flex;
  gap: 1rem;
}
.field-row .field {
  flex: 1;
}
html[data-device='mobile'] .field-row {
  flex-direction: column;
  gap: 0;
}

/* ── Field labels ───────────────────────────────────────────── */
label {
  display: block;
  font-size: 0.72rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: 0.6rem;
}

/* ── Helper text below fields ───────────────────────────────── */
.hint {
  font-size: 0.72rem;
  color: var(--ink-mute);
  margin-top: 0.4rem;
  font-style: italic;
  letter-spacing: 0.02em;
  line-height: 1.4;
}

/* ── Text inputs ──────────────────────────────────────────────── */
input[type='text'],
input[type='email'],
input[type='tel'] {
  width: 100%;
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--rule);
  padding: 0.4rem 0;
  font-family: inherit;
  font-size: 1rem;
  font-weight: 300;
  color: var(--ink);
  outline: none;
  transition: border-color 0.2s;
}
input[type='text']:focus,
input[type='email']:focus,
input[type='tel']:focus {
  border-bottom-color: var(--ink-soft);
}

textarea {
  width: 100%;
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--rule);
  padding: 0.4rem 0;
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 300;
  color: var(--ink);
  outline: none;
  resize: vertical;
  min-height: 100px;
  transition: border-color 0.2s;
}
textarea:focus {
  border-bottom-color: var(--ink-soft);
}

input::placeholder,
textarea::placeholder {
  color: rgba(26, 22, 20, 0.3);
  opacity: 1;
}

/* ── Select ──────────────────────────────────────────────────── */
select {
  width: 100%;
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--rule);
  padding: 0.4rem 1.4rem 0.4rem 0;
  font-family: inherit;
  font-size: 1rem;
  font-weight: 300;
  color: var(--ink);
  outline: none;
  transition: border-color 0.2s;
  cursor: pointer;
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M0 0l5 6 5-6z' fill='%231a1614' opacity='0.4'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.2rem center;
  background-size: 8px 5px;
}
select:focus {
  border-bottom-color: var(--ink-soft);
}

/* ── Continue button ────────────────────────────────────────── */
button.submit {
  margin-top: 2rem;
  display: block;
  width: 100%;
  background: var(--ink);
  color: var(--paper);
  border: 1px solid var(--ink);
  padding: 0.9rem;
  font-family: inherit;
  font-size: 0.8rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  cursor: pointer;
  transition:
    background 0.2s,
    color 0.2s;
}
button.submit:hover {
  background: var(--paper);
  color: var(--ink);
}

/* ── Inline validation error messages ───────────────────────── */
.error {
  font-size: 0.72rem;
  color: #b8492e;
  margin-top: 0.3rem;
  letter-spacing: 0.04em;
  display: none;
}
.error.is-visible-block {
  display: block;
}
.submit-error {
  text-align: center;
  margin-top: 1rem;
}

@media (max-width: 500px) {
  h1 {
    font-size: 1.6rem;
    margin-bottom: 1.8rem;
  }
  button.submit {
    padding: 0.8rem;
    font-size: 0.75rem;
  }
}

html[data-device='mobile'] h1 {
  font-size: 1.5rem;
  margin-bottom: 1.6rem;
}
html[data-device='mobile'] .form-container {
  width: 96vw;
  margin-top: 0.4rem;
}
html[data-device='mobile'] button.submit {
  padding: 0.85rem;
  font-size: 0.78rem;
  min-height: 48px;
}
html[data-device='tablet'] h1 {
  font-size: 1.75rem;
}
html[data-device='tablet'] .form-container {
  width: min(78vw, 500px);
}
html[data-device='tablet'] button.submit {
  min-height: 48px;
}

/* ── Desktop: roomier layout, two-up rows ─────────────────────── */
html[data-device='desktop'] body {
  padding: 5rem 2rem 5rem;
}
html[data-device='desktop'] .form-container {
  width: min(80vw, 620px);
  margin-top: 1.4rem;
}
html[data-device='desktop'] h1 {
  font-size: 2.4rem;
  margin-bottom: 3.2rem;
}
html[data-device='desktop'] .section-label {
  margin-top: 3rem;
  margin-bottom: 2rem;
}
html[data-device='desktop'] .field-row {
  gap: 1.4rem;
}
html[data-device='desktop'] button.submit {
  margin-top: 2.6rem;
  max-width: 320px;
  margin-left: auto;
  margin-right: auto;
}